Drier.



F. R. WILLSUN, JR.

DRIER.

APPLICATION FLED JUNE 12, 1906.

Patented Mar. 29, 1910.

2 SHEETS-SHEET l.

ZW afto'cm? F. R. WILLSON, IRE DRIRE,

APPLICATION FILED JUNE 12,1906. @E atene@ 29, ms

2 SHBETSf-SHBET 2.

@wijn @osea FREEMAN E. l/VLLSGN, JB., F WTORTHNGTON, HIO, ASSEGNGBJ, BY MESNE ASSIGN- MENTS, TH" MANUFACTURNG CGMPANY, A CGRPGRATION OF OHIO.

DRIER.

Specification of Letters Patent. :Patented iwal. 29, 1910.

Application yfiled lTune 12, 1906. Serial No. 321,398.

To an' nii/om may concern.'

lie it lrnown that i, Feniciriizv l. lfiLiisoN, Jr., ar citizen of the United States, iesieing at llilerthington, in the county of liranlrlin and State of ifjhio, have invented certain new and useful liiiprovi-xineuts in Driers, of which the following specification, reference being had therein to the accompanying drawing.

lily invention relates to driers for pnlif'eriilent, granular and fibrous inaterial such 'tween the tubes, at the extreine forward end of the druin 7.

Supported in contact with the front end of the drinn is a` stationary, frusto-con'ical chamber l5, into which leads a charging chute le; and secured to the forward end of the chainber is a connection 17, for an exhaust fan. The forward end of the drinn is preferably surrounded by a ring 1S, carried by suitably mounted rolls 19; and the rear end has a suitably journaled drivingiis finely divided coal or coke, clay, asbestos, shaft 2() with power connection 21, and peat, wood-iiiuip, grain, etc.; and its object carrying the drinn by spiders 22. A fricis to provide a cheaplyeeonstructed drier of tion-ruig of angle iron, inay also be prolarge capacity and heating surface, which rided; and a chute 2st, closed by a. sliding shall be practically balanced, require coingate not shown) is suitably located. to catch paratively little power to drive, be exceedthe dried material discharged froni the cyh ingly rapid in operation and dry materials iii-"ler without danger of discoloration by the fiir- 'io further hasten the drying, the back of nace gases. the furnace 2 is provided with a transverse ln the drawings: Figure l is a longitudidrinn or chaniber 25, having suitable iiinal section ofthe setting, showing the driertakes, for heating air; said chamber being drinn inl side elevation; F ig. 2 is a rear el-econnected by a flue 2o with the chamber 27. Vation; and Fig. o is a cross-section on the This ehainbcr communicates through the line llll of F ig. l. open rear end of cylinder l2 and the intel the ttii'ig, preferably of fire-brick, riors of tlie tubes 8 and chaniber l5 with having at its forward end furnace or tirethe exhaust-fan connection. box 2, connected by a flue f5, with the iu- The ope-ration is as follows The inateterior inclined chainber (l, of the setting. rial fed into chainber l5 passes thence into stack 5, is provided at the upper, front the open ends of the tubes 8; being preportion o-f the setting, and both the stack vented froin passing between thein by the and flue are provided with suitable daniplate ist. lt then constantly turned pers 6, t3. and stirred, being slowly fed by the iut-linarrotatably inounted in the chaniber 4- is an tion oit the drinn, through the tubes and cylinder l2 to the discharge chute. The l'urnaee gases pass rearwardly, as shown by the inclined dr in T, inade up of a plurality of tubes 8, of sheet or plate nietal, preferably arrows, around the exterior of the drinn, thence through the rear openings l0 to the six in nuinber for convenience in grouping;

interior thereof, thence forwardly, and

polygonal, and preferably hexagonal, in cross-section; said tubes being connected by angle-plates or strips S), as best shown in einer-ee through the forward opei'iings l0; Fig. rlhe plates S)- are provided with passing' nally to the stack after having iinpinged upon all sides of the revolving tubes. At the saine tinie, air entering the ehaii'ibei' is heated, passes through tine 26, chainber 27 and the interiors of the tubes 8, in direct contact with the material, to the exhaustronnection 17; the inore highly heated air coining first in contact with the drier material while in the best condition to abstract inoisture therefroin.

rllhe advantages of iny invention result from the large area externally exposed to the furnace gases; the polygonal section of the tubes, which perinits of low cost of construct-ion, ease of assembling and the thoropenings l0 at each end.

ii-earwari'lly, the space between and surrounding the tubes 8 is closed by a plate partition ll secured to and rotating with the drinn, and said drinn has a cylindrical extension l2, into which the tubes discharge. Near the forward end of the drinn is a partition 13, siiniiar to partition il, surrounding and rotating with the tubes, but not filling the space between thein. fr third partition 14A, siinilar to 1l, closes the front of the setting and the spa-ce between the hexagonal tubes, and a similar plate 14; closes the exterior recesses and Jthe space be ough stirring of the contents; the substantial balancing of the drinn by reason ot the equal peripheral loading, the consequent saying of power necessary to drive the di'iiizn; and the readiness with which hot air iiniiiixed with products of combustion can be brought into direct contact with the material to be dried.

Many modifications can be made in the apparatus without departing from my inyention; since what l claim is 2v l. ln a drier a rotatable drinn comprising a series of longitudinal receptacles for the material to be treated axially arranged about a coinnion longitudii'ial center and means for closing the spaces between said eceptacles whereby there formed a central flue, and means for passing a heating inei dium through the said flue, substantially as i set forth.

2. ln a drier a rotatable drinn formed of a series of polygonal tubes arranged in parallel relation with each other and axially equidistant from the longitudinal axis of the drum, and plates extending between the contiguous tubes, theptubes and plates inclosing a central flue, and means for causing a heating medium to pass through the said flue, and also in contact with the outer surfaces of the said drinn, substantially as set forth.

ln a drier the combination of a drinn surrounding a central ithie, a series of separate drying chambers axially equidistant from the axis of the said iiue and mounted inside of the said drum, means for directing a heating' medium to the central iue, and for conducting it away therefrom, and means for feeding the material to be dried to the said drying' chambers, substantiallyv as set forth.

4. In a drier, a rotatable drinn comprising a plurality of peripherally-arranged' tubes, a furnace, means for conducting the products of ctunbustion therefrom over the exterior of said druin and then through the interior thereof, and means associated with said furnace for heating a current of air and passing it through the moving tubes.

ln a drier, the combination of setting in which is formed' a heating chamber, means for supplying hot gases to the heating chamber, a drier tube arranged to be rotated within the heating chamber, means for feeding the material to the drier tube and means for dividing the heating chamber into two parts, of which means the said drier tube constitutes a part, whereby it is po:- sible to conduct the hot gases along the outside of the tube in contact with the walls on one side thereof and of returning the hot gases in the opposite direction in contact with the outside of the tube on the opposite side thereof.

G. ln a drier, an inclined drum comprising a plurality of peripherallyarranged polygonal. receptacles and apertured spacing members between said receptacles. means for rotating said drinn, and means for passing heated gases over the exterior of said drinn, then through one set of said apertures to the interior thereof and then through a second set to a discharge flue.

T. in a drier, a setting, an inclined drinn rotatably mounted 'therein and comprising a plural ity of peripherally-arranged polygonal receptacles, means for rotating said drinn, means for feeding' material to and through said drums while in motion, a furnace in said setting, an air-heating chamber associated with said furnace; conduits for conducting the products of combustion from said furnace first over the exterior of said drinn and then through the interior thereof, and conduits for conducting air from said air -heating chamber through said receptacl es in direct cont-act with the material and in a direction opposite to the direction of feed of the material.

8. In a drier, the combination of a heating chamber, means for supplying the hot gases of combustion to the heating' chamber,a drier tube arranged to be rotated within the heating ehamber,1neans for feeding the material to the drier tube, means secured to opposite sides of the drier tube for dividing the heating chamber into separate compartments whereby it is possible to conduct the hot gases along the outside of the tube in contact with the walls on one side thereof and of returning the hot gases in the opposite direction in contact with the outside of the tube on the opposite side thereof, and means for supplying hot air to the interior of the drying tube and conducting it from one end to the other thereof.

ln testimony whereof l aiiix my signature, in presence of two witnesses.

FREEMAN R. VILLSON, JR.

Wvitnesses J. E. liLtoDoNaLn. Roi Timmons. 

